------------[ cut here ]------------ WARNING: CPU: 0 PID: 17700 at lib/string_helpers.c:1029 __fortify_report+0x6c/0x74 lib/string_helpers.c:1029 strnlen: detected buffer overflow: 17 byte read of buffer size 16 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 PID: 17700 Comm: syz-executor.1 Not tainted 6.10.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express Call trace: [<818d4178>] (dump_backtrace) from [<818d4274>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:82622d44 r5:00000000 r4:81fe12b8 [<818d425c>] (show_stack) from [<818f189c>] (__dump_stack lib/dump_stack.c:88 [inline]) [<818d425c>] (show_stack) from [<818f189c>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:114) [<818f1848>] (dump_stack_lvl) from [<818f18dc>] (dump_stack+0x18/0x1c lib/dump_stack.c:123) r5:00000000 r4:8285fd18 [<818f18c4>] (dump_stack) from [<818d4d1c>] (panic+0x120/0x358 kernel/panic.c:347) [<818d4bfc>] (panic) from [<80243dcc>] (check_panic_on_warn kernel/panic.c:240 [inline]) [<818d4bfc>] (panic) from [<80243dcc>] (print_tainted+0x0/0xa0 kernel/panic.c:235) r3:8260c5c4 r2:00000001 r1:81fc9f28 r0:81fd1b78 r7:8080f2d4 [<80243d58>] (check_panic_on_warn) from [<80243fc0>] (__warn+0x7c/0x180 kernel/panic.c:693) [<80243f44>] (__warn) from [<802442ac>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:726) r8:00000009 r7:8202edf4 r6:eda35db4 r5:82e3d400 r4:00000000 [<802440c8>] (warn_slowpath_fmt) from [<8080f2d4>] (__fortify_report+0x6c/0x74 lib/string_helpers.c:1029) r10:8271c088 r9:00000003 r8:eda35ec3 r7:84101800 r6:200000c0 r5:837e7478 r4:8407a800 [<8080f268>] (__fortify_report) from [<818de560>] (__fortify_panic+0x10/0x14 lib/string_helpers.c:1036) [<818de550>] (__fortify_panic) from [<8062ac58>] (strnlen include/linux/fortify-string.h:235 [inline]) [<818de550>] (__fortify_panic) from [<8062ac58>] (sized_strscpy include/linux/fortify-string.h:309 [inline]) [<818de550>] (__fortify_panic) from [<8062ac58>] (ext4_ioctl_getlabel fs/ext4/ioctl.c:1154 [inline]) [<818de550>] (__fortify_panic) from [<8062ac58>] (ext4_fileattr_get+0x0/0x78 fs/ext4/ioctl.c:1609) [<80628b44>] (__ext4_ioctl) from [<8062b354>] (ext4_ioctl+0x10/0x14 fs/ext4/ioctl.c:1626) r10:82e3d400 r9:00000003 r8:86df2540 r7:200000c0 r6:86df2541 r5:00000000 r4:81009431 [<8062b344>] (ext4_ioctl) from [<8051a69c>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<8062b344>] (ext4_ioctl) from [<8051a69c>] (do_vfs_ioctl fs/ioctl.c:861 [inline]) [<8062b344>] (ext4_ioctl) from [<8051a69c>] (__do_sys_ioctl fs/ioctl.c:905 [inline]) [<8062b344>] (ext4_ioctl) from [<8051a69c>] (sys_ioctl+0x134/0xda4 fs/ioctl.c:893) [<8051a568>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xeda35fa8 to 0xeda35ff0) 5fa0: 00000000 00000000 00000003 81009431 200000c0 00000000 5fc0: 00000000 00000000 001542d0 00000036 7ef3832e 7ef3832f 003d0f00 76b090fc 5fe0: 76b08f08 76b08ef8 00016de8 00051580 r10:00000036 r9:82e3d400 r8:8020029c r7:00000036 r6:001542d0 r5:00000000 r4:00000000 Rebooting in 86400 seconds..